Denial of service in Mozilla Firefox

1) Denial of service

EUVDB-ID: #VU617

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-2827

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to cause denial of service on the target system.
The weakness is caused by content security policy (CSP) containing a referrer directive with no values. An out-of-bounds memory read error in mozilla::net::IsValidReferrerPolicy() may cause the application service to deny.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Update to 49.0.

Vulnerable software versions

Mozilla Firefox: 3.5 - 48.0.2

CPE2.3

• cpe:2.3:a:mozilla:mozilla_firefox:3.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_firefox:44.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_firefox:44.0.1:*:*:*:*:*:*:*

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2016-85/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.